my Genesis G70 IG (2017-2023) has a P0302 misfire code how to fix

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Locate cylinder number 2 spark plug.
• Use a socket wrench to remove the spark plug.
• Inspect the old spark plug; if it is worn or damaged, replace it with a new spark plug that meets OEM specifications.
• Torque the new spark plug to the manufacturer's recommended value (typically around 13-15 lb-ft).
• Reinstall the engine cover if removed.

3. Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder number 2.
• Remove the ignition coil by unscrewing the mounting bolts or clips.
• Install the new ignition coil, ensuring it is seated correctly.
• Reconnect the electrical connector securely.

4. Test Fuel Injector

• If the misfire persists, check the fuel injector for cylinder number 2.
• Disconnect the fuel injector connector and use a noid light to check for signal; if there is no signal, inspect the wiring.
• If the injector is faulty, remove and replace it with a new one, ensuring proper installation.

5. Reassemble and Reset

• Reconnect the negative battery terminal.
• Start the engine and allow it to idle for a few minutes.
• Use the OBD-II scanner to clear the fault codes and monitor for any reoccurrence of the P0302 code.